package com.connection.second.web.controller.common;

import java.io.*;
import java.net.MalformedURLException;
import java.net.URL;
import java.net.URLConnection;
import java.nio.file.Paths;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Date;
import java.util.List;
import javax.annotation.Resource;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import cn.hutool.core.lang.UUID;
import cn.hutool.http.HttpUtil;
import com.connection.second.common.utils.oss.AliyunOssUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.http.*;
import org.springframework.util.FileCopyUtils;
import org.springframework.util.ResourceUtils;
import org.springframework.web.bind.annotation.*;
import org.springframework.web.client.RestTemplate;
import org.springframework.web.multipart.MultipartFile;
import com.connection.second.common.config.RuoYiConfig;
import com.connection.second.common.constant.Constants;
import com.connection.second.common.core.domain.AjaxResult;
import com.connection.second.common.utils.StringUtils;
import com.connection.second.common.utils.file.FileUploadUtils;
import com.connection.second.common.utils.file.FileUtils;
import com.connection.second.framework.config.ServerConfig;

import static com.connection.second.common.core.domain.AjaxResult.success;

/**
 * 通用请求处理
 * 
 * @author ruoyi
 */
@RestController
@RequestMapping("/common")
public class CommonController {

    private static final Logger log = LoggerFactory.getLogger(CommonController.class);

    @Autowired
    private ServerConfig serverConfig;

    private static final String FILE_DELIMETER = ",";


    /**
     * 通用下载请求
     *
     * @param fileName 文件名称
     * @param delete   是否删除
     */
    @GetMapping("/download")
    public void fileDownload(String fileName, Boolean delete, HttpServletResponse response, HttpServletRequest request) {
        try {
            if (!FileUtils.checkAllowDownload(fileName)) {
                throw new Exception(StringUtils.format("文件名称({})非法，不允许下载。 ", fileName));
            }
            String realFileName = System.currentTimeMillis() + fileName.substring(fileName.indexOf("_") + 1);
            String filePath = RuoYiConfig.getDownloadPath() + fileName;

            response.setContentType(MediaType.APPLICATION_OCTET_STREAM_VALUE);
            FileUtils.setAttachmentResponseHeader(response, realFileName);
            FileUtils.writeBytes(filePath, response.getOutputStream());
            if (delete) {
                FileUtils.deleteFile(filePath);
            }
        } catch (Exception e) {
            log.error("下载文件失败", e);
        }
    }

    /**
     * 通用上传请求（单个）
     */
    @PostMapping("/upload")
    public AjaxResult uploadFile(MultipartFile file) throws Exception {
        try {
            // 上传文件路径
            String filePath = RuoYiConfig.getUploadPath();
            // 上传并返回新文件名称
            String fileName = FileUploadUtils.upload(filePath, file);
            String url = serverConfig.getUrl() + fileName;
            AjaxResult ajax = success();
            ajax.put("url", url);
            ajax.put("fileName", fileName);
            ajax.put("newFileName", FileUtils.getName(fileName));
            ajax.put("originalFilename", file.getOriginalFilename());
            return ajax;
        } catch (Exception e) {
            return AjaxResult.error(e.getMessage());
        }
    }

    /**
     * 通用上传请求（多个）
     */
    @PostMapping("/uploads")
    public AjaxResult uploadFiles(List<MultipartFile> files) throws Exception {
        try {
            // 上传文件路径
            String filePath = RuoYiConfig.getUploadPath();
            List<String> urls = new ArrayList<String>();
            List<String> fileNames = new ArrayList<String>();
            List<String> newFileNames = new ArrayList<String>();
            List<String> originalFilenames = new ArrayList<String>();
            for (MultipartFile file : files) {
                // 上传并返回新文件名称
                String fileName = FileUploadUtils.upload(filePath, file);
                String url = serverConfig.getUrl() + fileName;
                urls.add(url);
                fileNames.add(fileName);
                newFileNames.add(FileUtils.getName(fileName));
                originalFilenames.add(file.getOriginalFilename());
            }
            AjaxResult ajax = success();
            ajax.put("urls", StringUtils.join(urls, FILE_DELIMETER));
            ajax.put("fileNames", StringUtils.join(fileNames, FILE_DELIMETER));
            ajax.put("newFileNames", StringUtils.join(newFileNames, FILE_DELIMETER));
            ajax.put("originalFilenames", StringUtils.join(originalFilenames, FILE_DELIMETER));
            return ajax;
        } catch (Exception e) {
            return AjaxResult.error(e.getMessage());
        }
    }

    /**
     * 本地资源通用下载
     */
    @GetMapping("/download/resource")
    public void resourceDownload(String resource, HttpServletRequest request, HttpServletResponse response)
            throws Exception {
        try {
            if (!FileUtils.checkAllowDownload(resource)) {
                throw new Exception(StringUtils.format("资源文件({})非法，不允许下载。 ", resource));
            }
            // 本地资源路径
            String localPath = RuoYiConfig.getProfile();
            // 数据库资源地址
            String downloadPath = localPath + StringUtils.substringAfter(resource, Constants.RESOURCE_PREFIX);
            // 下载名称
            String downloadName = StringUtils.substringAfterLast(downloadPath, "/");
            response.setContentType(MediaType.APPLICATION_OCTET_STREAM_VALUE);
            FileUtils.setAttachmentResponseHeader(response, downloadName);
            FileUtils.writeBytes(downloadPath, response.getOutputStream());
        } catch (Exception e) {
            log.error("下载文件失败", e);
        }
    }

    @CrossOrigin
    @PostMapping("/uploadOSS")
    public AjaxResult uploadFileOSS(MultipartFile file) throws Exception {

//            System.out.println(file);
            try {
                String url = AliyunOssUtils.uploadFile(file);
                if (url==null){
                    return AjaxResult.error("上传失败");
                }
                AjaxResult ajax = success();
                ajax.put("url", url);
                ajax.put("fileName", FileUtils.getName(url));
                ajax.put("newFileName", FileUtils.getName(url));
                ajax.put("originalFilename", file.getOriginalFilename());
                return ajax;
            } catch (Exception e) {
                return AjaxResult.error(e.getMessage());
            }
        }

    /**
     * 下载OSS文件
     */
    @CrossOrigin
    @PostMapping("/downloadOSS")
    public AjaxResult downloadFileOSS(String url,String fileName) throws Exception {

        try {
            File file = AliyunOssUtils.downLoadOssFile(url, fileName);
            if (file==null){
                return AjaxResult.error("下载失败,文件不存在");
            }
            AjaxResult ajax = success();
            ajax.put("url", url);
            ajax.put("fileName", FileUtils.getName(url));
            ajax.put("newFileName", FileUtils.getName(url));
            ajax.put("originalFilename", file.getName());
            return ajax;
        } catch (Exception e) {
            return AjaxResult.error(e.getMessage());
        }
    }


    @CrossOrigin
    @PostMapping("/downloadImage")
    public AjaxResult downloadNet(String netAddress, String path,String fileName) throws IOException {
        try{
            URL url = new URL(netAddress);
            URLConnection conn = url.openConnection();
            InputStream inputStream = conn.getInputStream();
            String realFileName = System.currentTimeMillis() +"_"+ fileName;
            FileOutputStream fileOutputStream = new FileOutputStream(path+"/"+realFileName+".jpg");

            int bytesum = 0;
            int byteread;
            byte[] buffer = new byte[1024];
            while ((byteread = inputStream.read(buffer)) != -1) {
                bytesum += byteread;
                fileOutputStream.write(buffer, 0, byteread);
            }
            fileOutputStream.close();
            inputStream.close();

            return success("图片下载成功,保存路径为"+path+"/"+realFileName+".jpg");
        }catch (Exception e){
            return AjaxResult.error("图片下载失败");
        }
    }


}